bwoodsend wrote:
PyInstaller 4.0 (the one on PyPI) doesn’t fully support 3.8 but most of
the 3.8 issues were fixed so you usually can get away with it.
PyInstaller 4.1 fully supports 3.8 but it isn’t out yet. You can use the
development version on Github.
I am in no rush. I use PyInstaller to convert a few utilities I wrote
into a single file executable. I wrote these in Python 3.7; I'd like to
use 3.8 (mostly for assignment expressions), but there is no pressing need.
As for the increases in size and startup time - I’m not seeing this when
I try freezing |print("hello")| with Python 3.7 and 3.8. I get 7.1MB
both times.
This is really weird. My test program is just this:
"""
def main():
print('Hello, world!')
if __name__ == '__main__':
main()
"""
That gets me (on Python 3.7.3) 5.856.459 bytes as single file
executable. I don't understand why that would be so different to your test.
Try building in |--onedir| mode then compare what’s
different or being added. Presumably 3.8 is including a package you
don’t need which 3.7 doesn’t have installed.
I compared the imports as reported in the xref report; they were mostly
identical, but only Python 3.7 imported these:
encodings.cp65001
encodings.unicode_internal
These seem unimportant. Only Python 3.8 imported these:
pyi_rth__tkinter.py
pyi_rth_multiprocessing.py
This seems suspicious. EXE-00.toc of the 3.8 version confirms that
_tkinter.pyd is included, as (hence) are tk86t.dll and tcl86t.dll. This
explains part of the size difference.
Loaded hooks for 3.7:
3925 INFO: Loading module hook 'hook-encodings.py' from [...]
4009 INFO: Loading module hook 'hook-xml.py' from [...]
(no run-time hooks)
Loaded hooks for 3.8:
5994 INFO: Loading module hook 'hook-distutils.py' [...]
6009 INFO: Loading module hook 'hook-encodings.py' [...]
6079 INFO: Loading module hook 'hook-lib2to3.py' [...]
6141 INFO: Loading module hook 'hook-sysconfig.py' [...]
6141 INFO: Loading module hook 'hook-xml.etree.cElementTree.py' [...]
6141 INFO: Loading module hook 'hook-xml.py' [...]
6192 INFO: Loading module hook 'hook-_tkinter.py' [...]
6528 INFO: Including run-time hook [...]pyi_rth__tkinter.py
6528 INFO: Including run-time hook [...]pyi_rth_multiprocessing.py
(Python 3.8.6 is freshly downloaded and has nothing installed;
PyInstaller is installed in a venv, with nothing else installed.) The
hooks shows elementtree and multiprocessing are included as well.
Using --onedir, I noticed that quite a few things are bigger in 3.8.
Libcrypto-1_1: 2.4->3.3 MB; python3x.dll: 3.6->4.1 MB; the test program
itself: 1.4->2.1 MB. I *really* don't understand how 3.8 can yield the
same size executable for you.
Lastly, I noticed that --onedir on 3.8 results in quite a few
subdirectories (encoding, http1.0, messages, ...) which don't appear in
the 3.7 --onedir build.
Startup time is mostly your
antivirus giving everything a scan as a onefile app unpacks itself. The
unzipping itself should be almost instant for such a small program. But
that 4 seconds latency suggests something else is happening.
The --ondir version executable doesn't exhibit this behavior, so it is
related to the unpacking. I temporarily disabled Windows Defender, and
sure enough: the program now starts in about half a second, instead of
four. Turning Defender back on gets me over four seconds startup time again.
Regards,
Gertjan.
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